Pitch determining device,申请号US19390269956-传众专利搜索

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发明名称	Pitch determining device
摘要
申请公布号	US2183902(A)	申请公布日期	1939.12.19
申请号	US19390269956	申请日期	1939.04.25
申请人	LINTON ALEXANDER SPANGLER	发明人	ALEXANDER SPANGLER LINTON
分类号	G01C9/12;G01C9/28	主分类号	G01C9/12
代理机构		代理人
主权项
地址

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